diff --git a/source/basic.tex b/source/basic.tex
index f33d0dc648..20af75955a 100644
--- a/source/basic.tex
+++ b/source/basic.tex
@@ -3750,6 +3750,8 @@
 \pnum
 \indextext{value!indeterminate}%
 \indextext{indeterminate value}%
+\indextext{value!erroneous}%
+\indextext{erroneous value}%
 When storage for an object with automatic or dynamic storage duration
 is obtained,
 the bytes comprising the storage for the object